1JN 3:12

12 [We should] not [hate others] as did [Adam’s son], Cain, who belonged to [Satan], the evil one. [Because Cain hated his younger brother], he murdered him. ◄I will tell you about why he murdered his brother./Do you know why he murdered his brother [RHQ]?► It was because Cain habitually conducted his life in an evil way, and [he hated his younger brother] because his [younger] brother [conducted his life] righteously.